It's domestic - albeit large!
All boxes need to be on the same line (Sky complain if multiview boxes are on different lines as they suspect you might have them installed in physically different locations and are trying to get multipole subscriptions on the cheap).
I'm installing 6 Sky boxes in a rack and need to connect them all to a BT line. Obviously I could simply daisy-chain ordinary splitters but is there a more professional way of connecting them up. Could I simply use a 4-way screw terminal block, or is there a wall-mounted connection box...